I think that the traditional family vacation has shifted from the two-week vacation with a plane trip at the beginning and at the end to a lot of shorter vacations throughout the year.
It's the time of year when planes are full, when hotels are full, when it's very difficult to get a rental car.
Once everybody gets on the plane with few bags, once the plane lands, getting off the plane is a lot easier.
Last summer as you recall the planes were bulging at the seams full of passengers, so there's a lot of equipment on those routes now that the airlines are trying to keep full this winter.
There's ... a liability issue. If an American Airlines plane hits clear air turbulence and someone is injured, they can fall back on the fact that they have it stated in their policy that they must be seated with their seat belt fastened at all times.